Khushis theory on time travel

In the book, there is answer to one of the most compelling questions regarding time travel . We dont know how it would happens and what would be inside it, but in this book I have provided a detailed description regarding how time travel would occur in future and how will it be possible. But also, there is an answer to one of the most propelling point, that time travel wont be possible in past, but in this book I have described how it is possible i both past and future and you can also alter your past and future, but in a rather different way, then we think it to be.